CVE-2026-68461

Summary

In the Linux kernel, the following vulnerability has been resolved:

device property: initialize the remaining fields of fwnode_handle in fwnode_init()

If a firmware node is allocated on the stack (for instance: temporary software node whose life-time we control) or on the heap - but using a non-zeroing allocation function - and initialized using fwnode_init(), its secondary pointer will contain uninitialized memory which likely will be neither NULL nor IS_ERR() and so may end up being dereferenced (for example: in dev_to_swnode()). Set fwnode->secondary to NULL on initialization. While at it: initialize the remaining fields of struct fwnode_handle too just to be sure.

[ Fix typo in commit message. - Danilo ]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 0198d579948322cda5178b9672d448375a32f947affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 173b61c9276c7b3a5fbcc63ae7aafc897fee1e18affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < f0b4e1cc8ad76baf49d898727eb52e91a4ef0544affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < c8542b68ba6ef4f61072098893a3f5b71c569b6caffected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 9c86a1f930bb2ddb85f867b4736716e82a4a4683affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < c81e2af41de6a159837c7129a4fc444ac6e48046affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 7eba000621fff223dd7bab484d48918c7c77a307affected
LinuxLinux5.11affected
LinuxLinux0 < 5.11unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.96 <= 6.12.*unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2-rc1 <= *unaffected

Weaknesses

References